Hawaii Water Quality — August 3, 2026

Big Island has been mostly advisory-free — the same baseline as the prior two weeks. 0 of our 7 tracked beaches on the island recorded one or more advisory days in that 30-day history window. NOAA's 7-day forecast is dry, so the mostly advisory-free baseline should hold. See the Big Island leaderboard for the beach-by-beach ranking.

Maui is worsening over the last 14 days (-36pp vs. the prior two weeks). 1 of our 6 tracked beaches on the island recorded one or more advisory days in that 30-day history window. NOAA's 7-day forecast is dry, which should halt new advisory activity and let the existing advisories begin to clear. See the Maui leaderboard for the beach-by-beach ranking.

Oʻahu is worsening over the last 14 days (-50pp vs. the prior two weeks). 1 of our 12 tracked beaches on the island recorded one or more advisory days in that 30-day history window. NOAA's 7-day forecast is mild — scattered showers possible but unlikely to drive new advisories. See the Oʻahu leaderboard for the beach-by-beach ranking.

Kauaʻi is worsening over the last 14 days (-79pp vs. the prior two weeks). Our 6 tracked beaches happen not to overlap with the DOH advisories driving this signal — the worsening trend is from island-wide or other-area advisory events. NOAA's 7-day forecast is mild — scattered showers possible but unlikely to drive new advisories. See the Kauaʻi leaderboard for the beach-by-beach ranking.